Petfood company Royal Canin is launching a new Royal Canin X-SMALL canine nutrition line, formulated for the needs of very small dogs.

The new line, introduced at the recently held Global Pet Expo, includes four formulas: Puppy, Adult, Mature +8 and Aging +12. To celebrate the new line's launch, the company is kicking off "The Royal Canin Treatment" sweepstakes, which runs through June 1. Royal Canin says the sweepstakes will award a winning pet parent with free dog food and grooming for life, along with an accessory shopping spree. Pet owners can also participate in "The Royal Canin Treatment Instant Win Game" for a chance to win one of more than 500 other prizes.

Royal Canin is expanding the formulas in its MINI dog food line, for dog weighing 9 to 22 pounds, with the new MINI +8 and MINI Aging +12, MINI Indoor formulas and MINI Spayed/Neutered formula.